Fairfax, SD Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fairfax, SD in one place.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 93. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Fairfax, SD is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 8:59 AM CDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Fairfax, SD.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 8:59 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairfax
Saturday looks like the warmest upcoming period in Fairfax at 93 degrees F.
Monday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 8:59 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KLNX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. South southwest wind around 10 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 90.
Partly cloudy, with a low around 68.
Partly sunny, with a high near 86.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 66.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89.
A slight chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Slight Chance Rain Showers then Mostly Sunny
|
93°F |
5 to 15 mph
SW
|
|
Saturday Night
Aug 29
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
71°F |
10 mph
SSW
|
|
Sunday
Aug 30
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
90°F |
10 mph
WSW
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
68°F |
5 to 10 mph
NW
|
|
Monday
Aug 31
|
Partly Sunny
|
86°F |
10 mph
NNW
|
|
Monday Night
Aug 31
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
65°F |
5 mph
ENE
|
|
Tuesday
Sep 1
|
Slight Chance Showers And Thunderstorms
|
86°F |
5 to 10 mph
S
|
|
Tuesday Night
Sep 1
|
Slight Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
SSE
|
|
Wednesday
Sep 2
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
89°F |
5 to 10 mph
SSW
|
|
Wednesday Night
Sep 2
|
Slight Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairfax.